Widening Black-White IQ gap with Parental Education in the Add Health data

Some large datasets available, at this address, allows us to investigate some characteristics of the Add Health respondents. What I am interested here is the magnitude of the black-white (verbal) IQ difference at different levels of parental education. I have downloaded the WAVE I and WAVE III Public Use datasets for SPSS. In the WAVE I, the respondents’ mean age is 16, in WAVE III, 22 yrs-old.

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